1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
RideAnS [48]
3 years ago
11

Mary marries an unaffected man, justin, whose paternal uncle has galactosemia. determine the genotypes for justin's family.

Biology
1 answer:
vitfil [10]3 years ago
3 0
1. Galactosemia is a disease that will only be expressed when a person is<span><span><span> homozygotic recessive for that trait. It's the same as saying it </span> has</span> 2 recessive alleles.

Dominant allele-</span><span> G
recessive allele- g
</span>
Homozygotic dominant:  GG <span><span>(doesn't express the disease)
</span>Heterozygotic : Gg (doesn't express the disease)
Homozygotic recessive: gg (expresses it)</span>

2.
-Mary has this genotype: G_ . This means it can be GG or Gg
-The exercise already says that justin's mother is GG (<span>Homozygotic dominant)
</span>- If his mother is GG, one of these G's is going to be passed to Justin. So, his genotype is either GG or Gg. Since we are not sure we write as: G_.
Justin's genotype: G_

3.
-
Justin's uncle has galactosemia so his genotype is: gg

-
If the uncle was able to receive two recessive alleles it means the mother had one to pass, and so did the father. However, in the diagram, it's not pointed out that they have a disease so it only leaves one possible genotype: Gg. Justin's grandparents are both Gg.

4. The last person to analyze is Justin's father.
If we crossed the grandparents (Gg x Gg) we could obtain these genotypes: GG, Gg, gg.
Justin's father doesn't express the trait, so it's not gg. That leaves us with either GG or Gg. Since we can't know for sure, onece again we write as G_
Justin's father: G_
You might be interested in
A. How does a hot-spot supervolcano (such as Yellowstone) form? (5 points)
mafiozo [28]
A. Basically a hotspot forms above a mantle plume. A mantle plume is like a bit of magma from the earths mantle, but it’s like not near tectonic plate boundary things. (Sorry if that doesn’t make sense lol if you’re still confused I’d just look up a diagram of a hotspot)

B. A stratovolcano, those are just volcanos that are built with a bunch of lava and ash

C. Mt. Helens is formed on a subduction plate boundary, while a hotspot is formed because of mantle plumes, which are usually not on a plate boundary.

Hope this helps lol
6 0
2 years ago
Pepsin, a digestive enzyme that degrades proteins in the stomach, is synthesized as pepsinogen and converted to active pepsin in
kipiarov [429]

Digestive enzymes help to break down food in its simplest form. Pepsin is a digestive enzyme which leads to the degradation of proteins in the stomach. It is produced as pepsinogen and converted to active pepsin in the stomach by the removal of several amino acids.

<h3>What is pepsin?</h3>

Pepsin is a digestive enzyme which is present mainly in the gastric juice in stomach and helps to breakdown protein into peptides.

This pepsin is present in the stomach in the form of inactive pepsinogen. This pepsinogen gets active in the stomach by the action of hydrochloric acid.

Pepsinogen gets active and forms pepsin.

Thus, it can be concluded that the digestive enzyme pepsin degrades protein in stomach and is synthesized as pepsinogen and gets converted into active pepsin in stomach by removal of several amino acids.

For more details regarding digestive enzymes, visit:

brainly.com/question/24145559

#SPJ4

5 0
2 years ago
How are primary and secondary succession similar and how are they different?
stepladder [879]
They are similar to those of primary succession, primary succession occurs in an area without any initial. Succession always begins on a barren surface, whereas secondary succession be gains in environments that already possess soil. I hope this helps.
4 0
2 years ago
Identify the process in the water cycle that changed water vapor into liquid water droplets that formed the thunderstorm cloud?
kicyunya [14]
<span>Water heats up, changes to water vapor and evaporates, rises into the sky. It cools, condenses, turns back into liquid water forming clouds. Then it falls back to earth as precipitation and runs down hills or mountains during runoff and returns to lakes and oceans.

I think i`m not sure :)</span>
7 0
3 years ago
Read 2 more answers
If we describe the appearance of an individual, we are describing their
aliya0001 [1]
A. Phenotype. 
Genotype is the genetic constitution of an individual organism, genetic makeup is part of the DNA sequence, and personality is the way a person acts. 
6 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following is not a benefit of agar as a solid medium?
    10·1 answer
  • During which process of the water cycle does water change from a gas to a liquid?
    15·1 answer
  • BRAINLIESTTTTT ASAP!
    5·1 answer
  • Summarize the total response of cortisol induced changes.
    11·1 answer
  • Which of the following correctly describes the linkage that will be formed with the nitrogen base shown in the image below while
    10·1 answer
  • In which condition the substrate have faster diffusion rate
    7·1 answer
  • What is the role of the gall bladder
    9·2 answers
  • Please help this is my last question but I don’t know what the answer is!!! The question is in the image! Please answer soon if
    11·1 answer
  • Whoever answers first and it's correct gets 30 points and the brainliest!
    5·2 answers
  • How does island biogeography decrease ecological tolerance?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!